Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.

Câu hỏi

She said she felt tired as she _______________ for five hours.

A. had been working

B. has worked

C. worked

D. has been working

Đáp án
A. had been working

Câu hỏi thuộc Bài tập:

Bài tập Luyện thi vào lớp 10 - Phần Ngữ pháp (Mã 005)